Menu

About a week ago I received a ITEAD Sonoff, which is a nifty little device, for the surprisingly low price of only $4.85 (currently typing, normal price $6). There are two versions, one with and one without RF, I went for the one without, because I will only be using it over WiFi. Why the Sonoff? The Sonoff isn’t the first of its […]

Today the PCB’s for my automated cat food dispenser arrived from dirtypcbs, and once again they look gorgeous. Even the ID for the boards got placed under the power supply, so when assembled it it completely hidden. This is also the first time I am trying to put my logo on a board, and it looks pretty good too. Before […]

Finally the power supply modules arrived, and I could finish the layout. And sizes seems to be fine, and with enough clearance too. My first plan was to just use serial between the ESP8266 and Atmega329P, but I changed that to I2C instead, with a pair of BSS138 for level shifting. A bit more love to the silkscreen, and it looks […]

I had an automated cat food dispenser for quite a few years, with an Arduino on to override the build-in timer. It worked fine, until one day where the timer suddenly decided to also trigger at random times, forget to stop the motor letting the food out, detect it as being full, while being empty, and such things, so now […]

This is just a short post where I will show how I got my items, sitemap and rules for some simple temperature control. Items In items, I got a total of six items, one for temperature, one for heat index, one for humidity, one for the temperature target I am aiming for, and one for changing the mode. The items […]

In my previous post I posted some pictures from some wireless 433MHz remote controlled switches, and wrote a bit about wanting to change the internals of them. Wireless switches, with higher WAF – Part 1 I have made some more progress on the PCB for the switches, and hopefully they will fit in. The next step will be to print […]

In my previous post, I was showing a PCB which would fit in a dual outlet box, and while I probably would have worked fine, I started looking for something a bit better looking. What I ended up with was a set of these. They are a part of a cheap set of 3 remote switches, and a remote to […]

In my next openHAB journey, I come across another needed thing, because what is software for homeautomation, if there is no hardware to control? Earlier I have briefly written about how to use an ESP8266 with a reed switch, but in this, I am going to take it a step or two up. I got some of these dual […]

Next chapter in my openHAB journey, is how to make a cheap and simple switch, which will monitor a switch mounted to a window or door. To do this, I decided to use the ESP8266. It is widely available for purchase, is cheap, can connect to WiFi easily, and there are made support for multiple programming languages. In this guide, I […]